My car on occasion won't start, or whilst driving will cut out. It will start after turning over a few times, and drive like nothings wrong. I have taken it into my local VW garage, and they have hooked it up to the diagnostics, and changed the crank sensor (the only fault showing), but after swapping the sensor, the car still won't start, but by the time they have run diagnostics on it to find the fault, it starts again, showing no faults. Can anyone throw some light onto it? Cheers